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Light-induced linear dichroism in photoreversibly photocromic sensor pigments 6. Relation between the 2 pigments of the mycochrome system in Alternaria-Chichorii

  • T Kumagai
  • Lars Olof Björn
Publishing year: 1984
Language: English
Pages: 449-452
Publication/Series: Physiologia Plantarum
Volume: 60
Issue: 4
Document type: Journal article
Publisher: Wiley Online Library

Abstract english

Conidiation in A. cichorii Nattras is reversibly stimulated by near UV radiation (NUV .apprx. 313 nm) and inhibited by blue light (.apprx. 450 nm) and apparently is a mycochrome-mediated process. After induction with plane-polarized NUV, blue light polarized perpendicularly to the NUV was more effective in counteracting the induction than was blue light polarized parallel to the NUV. Both the blue-absorbing component (presumably a flavo-protein) and the PNUV (NUV absorbing moiety) of the mycochrome system are membrane-bound. The transition moment associated with blue light absorption in the presumed flavoprotein forms an angle of at least with the transition moment associated with NUV absorption in PNUV.


  • Biological Sciences


  • ISSN: 0031-9317
Lars Olof Björn
E-mail: lars_olof [dot] bjorn [at] biol [dot] lu [dot] se

Professor emeritus

Molecular Cell Biology

+46 46 222 72 53